Comparison

Chord NOTE vs Music Theory Intervals

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Chord NOTE

This app helps songwriters find chords that match melodies and provides tools for creating chord progressions. It also includes a scale library and can display vocal pitch to aid in composition.

Highlights
  • Chord finding for melodies
  • Chord Progression function
  • Scale library
  • Vocal pitch display
  • Key finding
  • iPad Split View/Slide Over support
Read full description

Chord NOTE is a Songwriter’s assistant tool. It assists in finding the right chords to match a melody or musical phrase. And it has great Chord Progression function and Scale library. Chord NOTE supports Slide Over and Split View on iPad, and provides the appropriate display and operation for iPhone and iPad. You wrote new melody came into your mind, but you could not apply some chords for your melody… At a time like this, you can get guides to find some chords that match your melody by Chord NOTE. If you have composed some songs already, you know almost melody and chord have some same notes. Because the main part of melody is made up of constituent notes of chord in most cases. In the same way, you’ll be able to find Key to match your melody by Chord NOTE. So Chord NOTE is very useful for finding the chord and key. If you record your singing melody, you can display the pitch of your voice. And you can sketch your songs by Chord Progression function. Chord Progression function will provide numerous features for you. Chord NOTE supports widening the imagination of your wings for real composer. Advanced Option : Chord NOTE works fine without this option. However, when you’ll buy this low price add-on, you can use more Chords and Scales. It will provide a complete set usually. You can read full function description at support page. http://therootage.com/iphone/chord-note-en/

About

Music Theory Intervals

Learn to identify musical intervals by ear or sight. This app offers various modes for practicing simple and compound intervals, with customizable settings for root notes, direction, and clefs. Save and print your quiz results for review.

Highlights
  • Recognize simple and compound intervals
  • Audio and visual training modes
  • Ear training mode
  • Clef notation training
  • Customizable interval playback
  • Grade book for saved results
Read full description

Teachers, students and professional musicians: Recognize simple and compound intervals by sight and/or sound. Compare any incorrect answer to the correct answer. Includes a 'Grade Book' list of all saved results that you can print or send. • Simple Intervals included are major, minor, diminished, augmented 2nds, 3rds, 6ths, 7ths, and diminished, perfect, and augmented 4ths, 5ths, and octaves. • Compound Intervals are intervals larger than an octave. • Three modes: Audio and Visual, Audio Only (Ear Training), and Visual Only (Clef Notation Training). • Treble, Alto, Tenor, and Bass clefs. • Set how the interval is played; harmonically, melodically up, down, or randomly. • Set a random root change, or set the root yourself between each question. • Set the number of questions, or stop anytime and grade only the number answered. The Grade Book is filterable by name. Grades include the name, date and time the quiz was taken, all relevant settings (clef, number of questions, etc.), and score (percentage and letter grade).

Screenshots

Chord NOTE4 screens
Music Theory Intervals4 screens

Verdict

The call

The clearest difference is rating: Music Theory Intervals at 4.0 against Chord NOTE's 3.0. Music Theory Intervals also leads on in-app purchases (none vs 1) and price ($1.99 vs $2.99). Chord NOTE's advantage is update cadence (every 2 months vs every 34 months) and iOS requirement (18.1 vs 26.0). On ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Chord NOTE costs $2.99 and Music Theory Intervals $1.99 up front. Chord NOTE sells 1 one-off in-app purchase. Music Theory Intervals asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Music Theory Intervals holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 5 respectively.

UpkeepUpdate frequency

Chord NOTE ships an update every 2 months, Music Theory Intervals every 34 months. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

Scorecard6 real differences · 4 level
Chord NOTE versus Music Theory Intervals: the parameters behind the verdict, then further details
ParameterChord NOTEMusic Theory Intervals
Price$2.99$1.99 — better
Rating3.0 (3 ratings)4.0 (5 ratings) — better
Positive reviews61.5% of reviews—
Number of ratings35 — better
Update frequencyEvery 2 months — betterEvery 34 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad — betteriPhone
Requires iOS18.1 — better26.0
Further details — not scored
Size31 MB42 MB
Age rating4+4+
DeveloperHidenori MatsuokaPatrick Q. Kelly

Customer experience

Chord NOTE

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews13 reviews
Positive61.5%
Neutral23.1%
Negative15.4%

Music Theory Intervals

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

1 purchases

Chord NOTE

One-time1
  • Advanced Option$1.99
None

Music Theory Intervals

No in-app purchases

Questions

Is Chord NOTE free?
Chord NOTE costs $2.99, and also offers in-app purchases.
Is Music Theory Intervals free?
Music Theory Intervals costs $1.99, with no in-app purchases.
Which has better reviews, Chord NOTE or Music Theory Intervals?
Music Theory Intervals is rated higher. Chord NOTE averages 3.0 out of 5 from 3 ratings, while Music Theory Intervals averages 4.0 from 5 ratings.
Do Chord NOTE or Music Theory Intervals have ads?
Neither Chord NOTE nor Music Theory Intervals shows ads.
Which is updated more often, Chord NOTE or Music Theory Intervals?
Chord NOTE ships an update every 2 months, and Music Theory Intervals every 34 months. Most recently, Chord NOTE was updated on October 17, 2026 and Music Theory Intervals on October 11, 2026.

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